sir
i am an embedded engineer in elecbits
i can do this work in 2 days with all your specifications
i have work with zigbee and have experience with all the sensors which will be used in this project to take data like
temperature- temperature sensor-(lm35,dht11,22)
pulse-pulse sensor
accelerometer-mpu6050 or adxl320
ecg-ad8232
pressure sensor-bmp180,280